Cartridge extractor, especially for one-shot firearms



I Aug. 23, 194-9. J KOUCKY ETAL 2,479,844

CARTRIDGE EXTRACTOR ESPECIALLY FOR ONE-SHOT FIREARMS Filed NOV. 19, 1947 INVENTOR Jose; koutxj maul Fr wfl'KiLLtJ ATTORNEY Patented Aug. 23, 1949 S if i fiTEIDGEFrX'ERACTOR;.ES'PEGIALLX EOE: QNE SHDT'E FIREARMS ApplicationNovemb'er 19, 19 1 7, Serial' No; 786,83? ln'fiiecliosiova'kia N ovemli'er 21 1946 'YiGlaims: 1-.

Our inventionrelates to improvements in breech loading firearms and more particularly in firearmshavin'g' a longitudinally movable breechblo'ch with a: cooperating longitudinally: movable extractor for withdrawing spent cartridge 7 shells from the cartridge;- chamber in the barrel.

Theknown'fire'arms ofsaid type have many disadvantages. Thus; for example, they require either 'thatthe cartridges are introduced by hand into-the car tridge 'chamber'in the'barrel, or they requi-r the use-of other than-. cylindrically shaped breec'l iblock's which are less dependable in fun'c tion and more difficultto manufacture;

The object of our invention is to avoid the said and othei disadvantages and to create a firearmwhi' simple in construction'without' impairing it's dependability;

The novel features which we consider-characteristic: of: ourinvention are set forthwith particularity in the appended claims.- The=invention itself, however; both as to its organization and its method-of operation; together with additional objects and advantages thereof, willbest be understood from the'fol'lowing' description of a specific embodiment when read in connection with the accompanying drawing in which Fig. 1 is a longitudinal section through the pertinent parts of the firearm with the breechblock in loading position, and

Fig. 2 is the same longitudinal section with the breechblock in locked position.

The breechbloek I which contains the firing pin 2 and its driving spring 3 is placed within the easing 4 and may longitudinally move therein forth and back between the loading position shown in Fig. 1 and the locked position shown in Fig. 2. The said casing 5 is joined to the barrel 5 which contains the chamber I I into which the cartridge is introduced before firing. The breechblock I cooperates in a manner known per se with an extractor 6 which is situated in a notch I8 of the casing 4 moving therein longitudinally forth and back between the positions shown in Figs. 1 and 2. To this effect the extractor 5 is provided with a sear I which extends into the longitudinal notch B of the breechblock I. The extractor 6 is equipped with the usual lip 9 which has an inclined front face and cooperates with the rim of the cartridge shell as shown in Fig. 2 withdrawing the shell from the cartridge chamber II after conveyor II] for the cartridge to be introduced into. the. chamber I,I-..- This conveyor Ill in: the lo ading position. of the; arm. as: shown in, Fig, 1 is: situated in front of. the. cartridge chamber. II. andrduring. its. forward-.movement into the firing position shown. in Fig, 2' slips. into the. recess. I3 arrangeciinthe barrel 5-below said chamber II. The: front edgeof. said; recess, It. is chamiered, preferably parallel to. the. inclined. front. face. of the; lip; s contains theeusual.indentationor groove for the: lip.- 3., and; cooperateswiththe. identically chamfered: frontedge I14: ofv the; conveyor I 0, thus facilitating. itgintreduction intqthe recess I3,

The extractor I3 is charged bythe spring Iii which also, supports. and; even-may completely replace, the action of; the, usualztriggerspring; This spring 55, holdsand guides thaextractcr-ii inthei casing notch I8. and; assures not only.- the proper actionof the-extractor f, with'its lip 9:, b11t alsozthaceoperation of thesea'r I with'the; breech! block I and with the recess; I 9- in; the striking pin: 21 The; said spring is preferably a leaf spring, as. shown and forms, as. saidabove the} support and uide. for the; extractor it which. is; otherwise freely situated in a notch I9 in the bottom of the casing 4.

The extractor 6 is in permanent connection with the trigger I2 whose arm I'I extends into grooves I6 of the extractor. In the shown embodiment the arm I] is forked and each prong engages one of a pair of grooves IE arranged on each side of the extractor 6.

The described mechanism operates as follows:

In the loading position shown in Fig. 1 the chamfered face I 4 of the conveyor III, which forms part of the extractor 6, abuts against the identically chamfered ridge of the recess I 3 arranged in the barrel 5, and the sear I catches with the recess I9 of the firing pin 2. A cartridge is placed upon the conveyor m which is accordingly shaped for example guttered. The breechblock I while moving forward from the position shown in Fig. 1 to that shown in Fig. 2 takes along the extractor 6, its conveyor part III slides into the recess I3 and the lip 9 pushes the cartridge into the chamber II until said lip 9 slips behind the rim of the cartridge shell (Fig. 2). At the same time the sear i, which engages the recess Iii of the firing pin 2, effects a compression of the firing pin spring 3 which is released and the firing effected when the trigger I2 is pulled. Thereafter the returning breechblock I cooperates again with the sear I causing the extractor 6 to move back into the position shown in Fig. 1. During this return movement the lip 9 withdraws the cartridge shell from the chamber II, the

conveyor [0 returns to its original position (Fig. l) to receive another cartridge and the sear 1 rebounds into the recess l8 of the firing pin 2.

Although we have shown and described a certain specific embodiment of an invention, we are fully aware that man modifications thereof are possible. Our invention, therefore, is not to be restricted except insofar as is necessitated by the prior art and by the spirit of the appended claims.

What we claim as our invention is:

1. In a breech-loading firearm the improvement comprising in combination, a barrel, a cartridge chamber in said barrel, a longitudinally movable breechblock, a firing pin arranged in said breechblock, a longitudinally movable extractor cooperating with the breechblock, a lip on said extractor to engage the rim of the cartridge shell and to withdraw the same from the cartridge chamber, the extractor extending beyond said lip and abutting the cartridge chamber in loading position, said extractor extension forming a conveyor for the cartridge to be introduced into the chamber, and a recess in the barrel below the cartridge chamber to receive the extractor extens'ion while the breechblock is locked.

2. ,In a breech-loading firearm according to claim 1 the improvement comprisingv a sear on the rear end of the extractor, a longitudinal notch in the breechblock cooperating with said sear, a recess in the firing pin, said recess being engaged by said sear in cocked position and a trigger mechanism effecting the disengagement of said sear from said recess. 3. A breech-loading firearm according to claim 1 in which the front face of the conveyor part of the extractor and the opposing edge of the barrel are conformingly chamfered, the said chamfered front face of the conveyor and the said chamfered edge of the barrel abutting while the breechblock is in the loading position.

4. A breech-loading firearm according to claim 1 in which the front face of the conveyor part of the extractor and the opposing edge of the barrel are conformingly chamfered, the said chamfered front face of the conveyor and the said chamfered edge of the barrel abutting while the breechblock is in the loading position, and the front face of said extractor lip being also conformingly chamfered to abut the said chamfered barrel edge when the said conveyor part is in forward position.

5. In a breech-loading firearm the improvement comprising in combination, a barrel, a cartridge chamber in said barrel, a longitudinally movable breechblock, a casing for said breechblock, a firing pin arranged in said breechblock, a longitudinally movable extractor cooperating with the breechblock, a lip on said extractor to engage the rim of the cartridge shell and to withdraw the same from the cartridge chamber, the extractor extending beyond said lip and abutting the cartridge chamber in loading position, said extractor extension forming a conveyor for the cartridge to be introduced into the chamber, a recess in the barrel below the cartridge chamber to receive the extractor extension while the breechblock is looked, a sear 0n the rear end of the extractor, a longitudinal notch in the breechblock cooperating with the sear and a recess in the firing pin also cooperating with said sear, a longitudinal notch in the breechblock casing to receive the extractor and to permit its longitudinal movements, a spring pressing upon the extractor and effecting the engagement of the sear with the recess in the firing pin, and a trigger mechanism effecting the disengagement thereof. 6. A breech-loading firearm according to claim 5 wherein the spring is a leaf spring forming a guide and support for the moving extractor.

7. A breech-loading firearm according to claim 5 wherein the extractor has at least one longitudinal groove into which engages an arm of the trigger mechanism;

JOSEF KOUCKY. V FRANTISEK KOUCKY. No references cited. 

